Molar Mass of CaS (Calcium Sulfide)

Molar Mass Calculator

What is the molar mass of CaS?

Answer

M(CaS) ≈

72.14 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — S: 32.06.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Cacalcium	1	40.078	40.078 w ≈ 55.56%	≈ 55.56%
Ssulfur	1	32.06	32.06 w ≈ 44.44%	≈ 44.44%
Σ = 72.138 ≈ 72.14 g/mol w = 100%				100%

Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)

Mass fractions of the elements

Ca 55.56%S 44.44%

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Molar masses of substances nearby

Formula	M, g/mol
FeO (iron(II) oxide)	71.844
C₃H₄O₂ (acrylic acid)	72.063
C₄H₈O (butanone)	72.107
CaS (calcium sulfide)	72.14
C₅H₁₂ (n-pentane)	72.151
Ge (germanium)	72.630
C₄H₁₁N (diethylamine)	73.139

FAQ

What is the molar mass of CaS?

M(CaS) ≈ 72.14 g/mol

How to calculate the molar mass of CaS?

Add up the atomic weights of all the atoms in the formula: 40.078 + 32.06 = 72.138 ≈ 72.14 g/mol.

How many grams are in 2 moles of CaS?

m = n × M = 2 mol × 72.14 g/mol = 144.28 g.

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